package com.tianji.learning.mq;

import com.tianji.api.dto.trade.OrderBasicDTO;
import com.tianji.common.constants.MqConstants;
import com.tianji.common.utils.CollUtils;
import com.tianji.learning.service.ILearningLessonService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.amqp.core.ExchangeTypes;
import org.springframework.amqp.rabbit.annotation.Exchange;
import org.springframework.amqp.rabbit.annotation.Queue;
import org.springframework.amqp.rabbit.annotation.QueueBinding;
import org.springframework.amqp.rabbit.annotation.RabbitListener;
import org.springframework.stereotype.Component;

import javax.annotation.Resource;

@Slf4j
@Component
public class LessonChangeListener {

    @Resource
    private ILearningLessonService iLearningLessonService;

    @RabbitListener(bindings = @QueueBinding(
            value = @Queue(value = "learning.lesson.pay.queue",durable = "true"),  // 队列名称和持久化
            exchange = @Exchange(name = MqConstants.Exchange.ORDER_EXCHANGE, type = ExchangeTypes.TOPIC),
            key = MqConstants.Key.ORDER_PAY_KEY
    ))
    public void listenLessonPay(OrderBasicDTO orderBasicDTO) {
        // 1、接收到消息先做健壮性处理
        if (orderBasicDTO == null || orderBasicDTO.getOrderId() == null || CollUtils.isEmpty(orderBasicDTO.getCourseIds())) {
            // 数据有误，无需处理
            log.error("接收到MQ消息有误，订单数据为空");
            return;
        }
        log.debug("监听到用户{}的订单{}，需要添加课程{}到课表中",orderBasicDTO.getUserId(),orderBasicDTO.getOrderId(),orderBasicDTO.getCourseIds());
        iLearningLessonService.addUserLessons(orderBasicDTO.getUserId(),orderBasicDTO.getCourseIds());
    }
}
